In a press statement, Cagayan public information officer Rogie Sending said Mamba has alerted the Provincial Disaster Risk Reduction Management Council (PDRMMC) and Task Force Lingkod Cagayan Quick Response Team to monitor the effects of the continuous rains.

As of Wednesday, several bridges in Cagayan are already impassable due to swollen rivers.

PDRRMC-Cagayan chief Bonifacio Cuarteros said the Magat Dam irrigation management issued an advisory on Wednesday warning its catch basins to take precautionary actions as it set to open more gates.

Cuarteros said it is “highly possible” that the release of water of Magat Dam will cause flood-causing water level in the Cagayan River.

He said the towns of Tuguegarao, Penablanca, Enrile, Solana, Iguig, Amulung, Alcala, Gattaran, Lasam, Allacapan, Ballesteros and Abulug are most vulnerable of the expected flooding.

Meanwhile, the Pinacanauan overflow bridge in this city is now impassable to both light and heavy vehicles.